TURBOCHARGER – INSPECTION AND ANALYSIS CENTER HOUSING

CONDITION:
Shaft bearings worn from contaminants in the lubricating oil.
CAUSE:
Poor add oil procedures – extended oil/filter change intervals.

RECOMMENDATION:
DO NOT REUSE:
To minimize wear rates and maximize component life, use recommended engine lube oil, maintain proper oil level and follow recom­mended schedule for oil and oil filter changes.

CONDITION:
Thrust bearing worn from contaminants of fine abrasives in the lubricating oil.
CAUSE:
Poor fill procedures – extended oil/filter change intervals

RECOMMENDATION:
DO NOT REUSE:
To minimize wear rates and maximize component life, use recommended engine lube oil, maintain proper oil level and follow recom­mended schedule for oil and oil filter changes.

CONDITION:
Noisy, lack of power
CAUSE:
Lack of lubrication to the shaft bearings and journals. This creates an imbalance with both wheels contacting the housing.

RECOMMENDATION:
DO NOT REUSE:
Determine what caused the lack of lubricant be­fore replacing the turbo­ charger.

CONDITION:
Driver abuse
CAUSE:
Repeat shutdown of engine from high RPM operation without proper cool-down period.

RECOMMENDATION:
DO NOT REUSE:
Reuse of this part may contribute to bearing or shaft failure in the near future. Reevaluate operating procedures.

CONDITION:
Turbocharger bearings dis­colored
CAUSE:
Coolant in lubricating oil (contaminated lube)

RECOMMENDATION:
DO NOT REUSE:
Find the cause for coolant contamination. May have been a previous failure.
An oil analysis may be required.

CONDITION:
Heavy sludge accumulation
CAUSE:
Improper shutdown procedures – worn or broken seal ring on turbine shaft or oil drain restricted.

RECOMMENDATION:
REUSE ONLY AFTER
PROPER CLEANING
AND INSPECTION:
Instruct user on proper shutdown procedures. Replace seal ring.

CONDITION:
Bearing journal bores damaged
CAUSE:
Lack of lubrication or restricted lubrication

RECOMMENDATION:
DO NOT REUSE:
Determine the cause of lack of lubrication or restricted lubrication to the turbocharger.

CONDITION:
Turbocharger seized
CAUSE:
Lack of lubrication to the shaft bushings and journals due to foreign material in oil passage in the center housing.

RECOMMENDATION:
DO NOT REUSE:
Determine the cause of restriction of oil to the bushing. Example shown: a piece of debris entered the lubrication system, blocking the oil flow.

CONDITION:
Compressor seal faces worn
CAUSE:
Usually related to bearing damage and also considered secondary damage caused by bearing damage.

RECOMMENDATION:
DO NOT REUSE:
Determine the cause of bearing damage.